Rationality is a methodology, not a position, and name-calling goes against it’s core principles.
To quote Vlad M:
In many ideologically charged topics that are a matter of culture wars and political battles, a key strategy is to create an association in the public mind between one’s favored position and a vague and general feeling of righteousness and moral rectitude—so that in the future, ideological opponents can be defeated by attacking their moral character, regardless of the quality and accuracy of their arguments and position
Rationality is a methodology, not a position, and name-calling goes against it’s core principles.
To quote Vlad M: